Method of Building a Direct Smelting Plant

Inactive Publication Date: 2007-11-15
TECHNOLOGICAL RESOURCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0014] The invention employs a ringer crane of a kind in which a boom carrying crane carriage is supported on a ring track and which carries one or more counter weights to counter

Problems solved by technology

Building a direct smelting plant of the kind described above presents major problems in that it is necess

Method used

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  • Method of Building a Direct Smelting Plant
  • Method of Building a Direct Smelting Plant
  • Method of Building a Direct Smelting Plant

Examples

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Embodiment Construction

[0043] The illustrated direct smelting plant comprises a direct smelting vessel 11 suitable for operation by the HIsmelt process as described in International Patent Publication WO 96 / 31627. Vessel 11 has a hearth that includes a base 12 and sides 13 formed from refractory bricks; side walls 14 which form a generally cylindrical barrel extending upwardly from the sides 13 of the hearth and upper barrel section 15; a roof 16 an outlet 17 for offgases; a forehearth 18 for discharging molten metal continuously; and a tap hole 19 for discharging molten slag.

[0044] Vessel 11 is fitted with a downwardly extending gas injection lance 21 for delivering a hot air blast into the upper region of the vessel and eight solids injection lances 22 (two only shown in FIG. 2) extending downwardly and inwardly through the side walls for injecting iron ore, solid carbonaceous material and fluxes entrained in an oxygen deficient carrier gas into the bottom part of the vessel.

[0045] Gas injection lance...

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Abstract

Method of building a direct smelting plant comprising a metal smelting vessel (11) and ancillary plant components such as the components of a hot air supply station (24), an offgas treatment station (32), a solids feed station (41), a hot metal desulphurization station (47) and hot metal and slag launders extending from the smelting vessel (11). The ring track (53) of a ringer crane (51) is installed in front of location at which vessel (11) is to be installed. Crane boom (54) is laid out along elongate stretch of the building site which becomes a corridor (60) between major ancillary components when plant is fully erected. Boom (54) is connected to crane carriage (52) and hoisted to provide high lift capacity over a ground area embracing proposed site of vessel (11) and ancillary components. Prefabricated components are then lifted by crane (51) into appropriate position for final installation. After installation is completed boom (54) is laid down along corridor (60) and crane (51) is dismantled and removed, leaving corridor (60) as an access laneway.

Description

TECHNICAL FIELD [0001] The present invention relates to direct smelting plant for producing molten metal in pure or alloy form from a metalliferous feed material such as ores, partly reduced ores and metal-containing waste streams. [0002] A known direct smelting process, which relies principally on a molten metal layer as a reaction medium, and is generally referred to as the HIsmelt process, is described in International Patent Publication WO 96 / 31627 (International Patent Application PCT / AU96 / 00197) in the name of the applicant. The HIsmelt process as described in the International application comprises: [0003] (a) forming a bath of molten iron and slag in a vessel; [0004] (b) injecting into the bath: [0005] (i) a metalliferous feed material, typically metal oxides; and [0006] (ii) a solid carbonaceous material, typically coal, which acts as a reductant of the metal oxides and a source of energy; and [0007] (c) smelting metalliferous feed material to metal in the metal layer. [000...

Claims

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Application Information

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IPC IPC(8): E04G21/00C21B11/00C21B13/00C21C5/28C21C5/52C21C5/56E04G21/14E04H5/00E04H5/02F27D99/00G09B29/00
CPCC21B11/00C21B13/00C21C5/285Y10S266/90C21C5/56C21B9/00Y10S266/901C21C5/5294Y02P10/134Y02P10/20
Inventor IONS, PHILIP JAMES
Owner TECHNOLOGICAL RESOURCES
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